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Yak hair stretches mainly due to macromolecules slipping past each other.

Scanning electron microscopy revealed four distinct hair root shapes in alopecia areata, suggesting a less invasive diagnostic method.

New cancer treatments are less harmful to hair but can still cause hair loss, color, shape, and growth changes.

New methods may change hair color and shape from the root, revolutionizing hair styling.

Certain nail conditions can suggest thyroid problems, with different symptoms for underactive (slow, thin nails) and overactive (spoon-shaped, brittle nails) thyroid.

Keratin peptides can change hair shape gently without harsh chemicals.

Merino wool fibers change shape with moisture, while human hair shape stays the same.

New imaging and testing methods can effectively assess hair shape changes and damage.

Older thin hair is not just thinner but also has different shape, structure, and stiffness.

Developing hair follicles form from ring-shaped patterns, with future stem cells originating from the outer ring, not the upper layers, as previously thought.

Using both vertical and transverse sections gives a better diagnosis of alopecia than using one method alone.

Online forums help understand men's concerns about baldness and show the need for better support that changes how baldness is viewed.

The enzymes Tet1, Tet2, and Tet3 are important for the development of hair follicles and determining hair shape by controlling hair keratin genes.

Poplar seed hairs grow from the placenta at the ovary base, with endoreduplication playing a key role in their development, and share similar cellulose synthesis processes with cotton fibers.

Optical coherent tomography can effectively detect steroid use by analyzing hair changes.

Men and women have different hairline restoration needs, with natural design being more complex for women, and hairline changes being important for transgender individuals' transitions.

Zinc deficiency causes early scalp hair damage that recovers slower than skin symptoms.

Permanent wave treatment with thioglycolic acid changes hair structure by altering disulfide bonds.

The conclusion is that certain scalp tissue changes are characteristic of lichen planopilaris, with mucinous perifollicular fibroplasia being a new feature for diagnosis.

Minoxidil slows hair cell growth but doesn't change cell shape or development.

Adding fetal calf serum helps Merkel cells survive and change shape.

Chemical hair straightening changes hair proteins and mostly fixes broken bonds.

New hair after alopecia areata can be thinner and change color but usually keeps the same shape.

The document discusses a condition causing hair loss after surgery and a type of rosacea affecting the nose, with treatments including surgery and laser therapy.

Thousand-graft hair transplants offer better coverage and look more natural but have concerns about graft survival and cosmetic risks.

Scientists made a mouse that shows how a specific protein in the skin changes and affects hair growth and shape.

Adding fetal calf serum to the medium kept Merkel cells alive and changed their shape.

Mitochondria change shape to meet energy needs during cell movement.

Children's hairlines change shape as they grow, with women often developing a widow's peak and men's hairlines becoming more convex and possibly balding at the temples, influenced by genetics and hormones.

The vitreous membrane in hair follicles changes shape during the hair cycle and may affect hair growth and nutrient exchange.